Chester Bennington's autopsy report released by coroner's office

Jayme Deerwester, USA TODAY , TEGNA3:47 AM. CST December 06, 2017

TOKYO - JULY 07: Chester Bennington of Linkin Park performs on stage at the Tokyo leg of the Live Earth series of concerts, at Makuhari Messe, Chiba on July 7, 2007 in Tokyo, Japan. (Photo: (Photo by Junko Kimura/Getty Images), 2007 Getty Images)

The toxicology portion of the autopsy report, obtained by USA TODAY, revealed a “presumptive positive” for methamphetamine or MDMA (ecstasy) in his blood using ELISA, an antibody-based test. It did not specify which of the two it was or how much was present.

Meanwhile, a mass-spectrometer test, which is used to find specific drugs and quantify the exact amounts found, failed to detect either drug in the urine sample, where drugs remain for a longer period of time.

According to the report, a prescription bottle of the sedative Ambien (Zolpidem), which the singer occasionally used, was found near his body, however, that drug was not detected in the toxicology screen.

A half-empty bottle of Corona beer was also found nearby, which could explain the small amount of alcohol present in his system. But at .05%, it wouldn't have been enough to register as a DUI in California.